Rotary positive-displacement pump



2. Rotary positive-displacement pump

2.1 : Perspective

2.2 : Perspective

2.3 : Front

2.4 : Back

2.5 : Right

2.6 : Left

2.7 : Top

The broken lines shown are included for the purpose of illustrating unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for for a rotary positive-displacement pump, as shown and described. 